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Finding the Third Proportional to 6,620 and 15,914

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Solution

The third proportional to 6,620 and 15,914 is: 38,256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620 : 15,914 = 15,914 : x
  2. Step 2: Convert to fraction form
    6,620/15,914 = 15,914/x
  3. Step 3: Cross multiply
    6,620x = 15,914 × 15,914
  4. Step 4: Simplify right side
    6,620x = 253,255,396
  5. Step 5: Solve for x
    x = 253,255,396/6,620
  6. Step 6: Final answer
    x = 38,256.10

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.